Properties of blends of polyphenylsulfone and acetylene terminated reactive plasticizer. Final report Oct 79-Jun 80

Technical Report · Sun Nov 01 04:00:00 EST 1981

OSTI ID:5044705

Sikka, S S; Goldfarb, I J

Polyblends of polyphenylsulfone (PPS) and reactive plasticizer (acetylene terminated sulfone) have been considered as matrix resins for graphite reinforced composites. The thermoplastic polyphenylsulfone provides high glass transition temperature and therefore high end-use temperature while the reactive plasticizer-acetylene terminated sulfone (ATS) lowers the glass transition temperatures and the viscosities of the blends for the purpose of improved processing conditions. Since ATS contains reactive acetylene functional groups, it reacts and becomes dormant in the system. Blends of polyphenylsulfone and reactive plasticizer have been prepared in weight percent compositions of 90 PPS/10 ATS, 80 PPS/20 ATS, 70 PPS/30 ATS, and 60 PPS/40 ATS. These were cast from chloroform solvent yielding clear films. The calculated and measured refractive indices of PPS/ATS are about the same and therefore light scattering studies of polyblends have not shown any phase separation of PPS and ATS. Transmission electron microscopy on microtomed specimens of PPS/ATS blends indicates a possibility of phase-separation of the the two components but it needs further investigation. Cure studies of these blends have shown retention of about 14% solvent which has additional influence in lowering the Tg of the blends.

• Research Organization: Air Force Wright Aeronautical Labs., Wright-Patterson AFB, OH (USA)
• OSTI ID: 5044705
• Report Number(s): AD-A-111393/5; AFWAL-TR-81-4100
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360301 -- Composite Materials-- Preparation & Fabrication-- (-1987)
360401* -- Polymers & Plastics-- Preparation & Fabrication-- (-1987)
ACETYLENE
ALKYNES
COMPOSITE MATERIALS
ELECTRON MICROSCOPY
GLASS
HYDROCARBONS
KINETICS
LIGHT SCATTERING
MATERIALS
MATRIX MATERIALS
MICROSCOPY
OPTICAL PROPERTIES
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PLASTICIZERS
PLASTICS
POLYMERS
PROCESSING
REACTION KINETICS
REFRACTIVITY
SCATTERING
SULFONES
SYNTHETIC MATERIALS
THERMODYNAMIC PROPERTIES
THERMOPLASTICS
TRANSITION TEMPERATURE
TRANSMISSION ELECTRON MICROSCOPY